KR101471976B1 - Apparatus for collecting oil mist - Google Patents

Abstract

The present invention relates to an apparatus for collecting oil mist. The apparatus for collecting oil mist according to the present invention includes: an electric charging part including a ground plate provided in plurality to define a space therebetween to introduce an exhaust gas including oil mist and steam, a discharge electrode disposed in the space to generate a high voltage to charge the exhaust gas, and a first high voltage applying unit receiving the high voltage to supply the high voltage to the discharge electrode; a rotating part accommodated in a hollow body part connected to the electric charging part to guide and collect the oil mist charged by the electric charging part toward an inner wall of the body part, thereby mixing particles that is non-charged by the electric charging part with ions; an electricity collection part connected to the rotating part to form electric fields, thereby collecting the oil mist that is not removed by the electric charging part and the rotating part therein; a first fixing part formed of non-metal, the first fixing part being disposed in the electric charging part to fix the first high voltage applying part; a first air supplying part for supplying air into the first fixing part to prevent the steam from being introduced into the first fixing part. Thus, the charged oil mist may be collected onto the inner wall of the body part through the rotating part to collect the oil mist into the electricity collection part by using the electric fields without being affected by the steam, thereby increasing removal efficiency of the oil mist. Also, since the rotating part and the motor are integrated, the apparatus may be easily carried.

Description

{APPARATUS FOR COLLECTING OIL MIST}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil mist collecting apparatus, and more particularly, to an oil mist collecting apparatus which collects charged oil mist on an inner wall of a body portion through a rotating portion and collects the collected oil mist on an electric dust collecting portion using an electric field, The present invention relates to an oil mist collecting apparatus which improves the removal efficiency and durability of an oil mist and is easy to carry by integrating a rotating portion and a motor.

Generally, oil mist is generated by cooling oil, cutting oil or the like in machining that carries out machining processes such as cutting, grinding and cleaning.

Since the oil mist is very fine, it is not easy to check whether the oil mist is generated. The oil mist is sucked into the air by being scattered by an operator who performs machining. Such inhalation of the oil mist not only lowers the working efficiency but also seriously affects the body of the operator. Further, the oil mist is adhered to a mechanical device, a product, or the like.

Accordingly, a collecting device for collecting the oil mist is used in a workshop for performing machining. The oil mist collecting apparatus is classified into a collecting apparatus using a fibrous filter or a collecting apparatus using an electric dust collecting apparatus.

A collecting device using a fibrous filter is a device for separating and collecting oil mist from air by filtering a gas contaminated by oil mist with a fibrous filter. A fiber collecting device using a fiber filter is advantageous in that it is simple to install and has a low investment cost, but it has a disadvantage of periodically replacing a fibrous filter. In addition, since frequent clogging of the fibrous filter makes it difficult to keep the airflow rate of the air passing through the fibrous filter constant, the treatment is also problematic because the exchanged fibrous filter is treated as industrial waste.

FIG. 1 is a view schematically showing a conventional oil mist collecting apparatus, and FIG. 2 is a view schematically showing another conventional centrifugal type oil mist collecting apparatus.

In order to solve the problem of a collecting device using a fibrous filter, the oil mist collecting device of Patent Application No. 10-2000-0000063 includes a preliminary charge / agglomeration portion 11 for collecting the oil mist by charging the anode as shown in Fig. 1 And an oil mist collecting portion disposed behind the preliminary charging / agglomerating portion 11 for collecting the agglomerated oil mist separated by the inertia impact force generated by forced rotation by the fan. The positive charge (+) and negative (-) poles are supplied in the preliminary charge / agglomeration unit 11 to charge the oil mist, and the positively charged oil mist is agglomerated to increase the particle size And the coherent and cohered oil mist is forcedly rotated by the fan to increase the inertial force and collect dust on the wall surface as the trapping surface. However, due to the restriction in space, the oil mist charged in the preliminary charging / agglomerating portion 11 can not be sufficiently agglomerated until it reaches the oil mist collecting portion 12, so that it is not removed by the centrifugal force or the removal efficiency is lowered have.

2, a particulate filter 23 such as a HEPA (High Efficiency Particulate Air) filter is further provided at the rear of the oil mist collecting portion 12 in order to solve the above- And the particulate filter 23 collects the remaining oil mist that has not been removed by the oil mist collecting section 12. [ However, even if the particulate matter filter 23 is disposed behind the oil mist collecting section 12, the oil mist can not be removed from the oil mist collecting section 12 and passes through the particulate matter filter 23, As shown in Fig.

On the other hand, conventionally, water-insoluble is used as the cooling oil or cutting oil, but recently, the cooling process oil or the cutting oil is processed using water-soluble having a ratio of oil and water of about 1: 4. In the case of using water-soluble cooling oil or water-soluble cutting oil, sparking due to water vapor or high voltage is not applied to a portion where a high voltage is applied.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to solve the problems of the prior art as described above, and it is an object of the present invention to provide a method of controlling an oil mist Which is capable of improving the removal efficiency and durability of the oil mist.

According to an aspect of the present invention, there is provided a fuel cell system including a ground plate into which a plurality of exhaust gases including oil mist and water vapor are introduced to form a spacing space, And a first high voltage applying unit that receives a high voltage and supplies the high voltage to the discharge electrode; The oil mist is collected in the hollow body portion connected to the charge portion, and the oil mist charged in the charge portion is guided and collected in the direction of the inner wall of the body portion. The charged particles are mixed with ions in the charge portion reel; An electric dust collecting part connected to the rotating part and having an electric field formed to collect the oil mist not removed by the charging part and the rotating part; A first fixing unit provided in the charging unit and fixed to the first high voltage applying unit; And a first air supply unit for supplying air into the first fixing unit so that steam does not flow into the first fixing unit.
Here, the rotating portion may include an inflow portion into which the oil mist flows; A sealing part facing the inflow part and provided in a plate shape to block the flow of the oil mist toward the electric dust collection part; And a plurality of blades for interconnecting the inlet and the hermetically sealed portion and generating a centrifugal force through rotation.

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The rotation unit may further include a motor accommodation unit for accommodating the motor in a space between the inflow unit and the enclosure.

Here, the electrostatic dust collecting unit may include a dust collecting plate having a plurality of electrical dust collecting units spaced apart from each other by a predetermined distance and electrically insulated from each other. And a metal plate disposed alternately with the dust collecting plate and forming an electric field with the dust collecting plate when a voltage is applied thereto.

Here, the second high voltage application unit applies a voltage to the metal plate; And a second fixing part which is formed of a nonmetal and is installed in the electric dust collecting part and fixes the second high voltage applying part.

The apparatus may further include a second air supply unit for supplying air into the second fixing unit so that steam does not flow into the second fixing unit.

Here, it is preferable to further include a second heating unit for inducing evaporation of steam in the second fixing unit.

The apparatus may further include a first heating unit for inducing evaporation of steam in the first fixing unit.

It is preferable that a plurality of the discharge electrodes are formed along the longitudinal direction, and protrusions protruding from the side surface of the discharge electrode.

Here, the surface of the ground plate on which the oil mist is collected is preferably subjected to a sanding process.

Here, it is preferable that the end portion of the ground plate on which the oil mist is collected has a smaller cross-sectional area in the gravitational direction.

Here, the surface of the dust collecting plate on which the oil mist is collected is preferably sanded.

Here, it is preferable that the end portion of the dust collecting plate in which the oil mist is collected has a smaller cross-sectional area in the gravitational direction.

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According to the present invention, the primary dust collecting of the oil mist is carried out in the load portion, the secondary dust collecting of the oil mist is performed in the rotating portion, and the oil mist is collected in the electric dust collecting portion finally, thereby improving the collecting efficiency of the oil mist contained in the exhaust gas .

In addition, a plurality of discharge electrodes are formed as a rigid body and are connected in parallel with each other, and protrusions are formed on the sides along the longitudinal direction, so that the oil mist can be more easily charged.

In addition, the first fixing part is provided with the first heating part so that the steam contained in the exhaust gas can be evaporated, thereby solving the problem that the durability due to steam is reduced and the insulating configuration is energized.

In addition, the first fixing portion is provided with the first air injecting portion so that the steam contained in the exhaust gas does not flow into the first fixing portion, thereby solving the problem that the durability due to steam is reduced and the insulating configuration is energized.

Also, since the first fixing portion naturally supplies air by the pressure difference generated by the rotating portion, it is possible to solve the problem that the durability due to steam is reduced and the insulating configuration is energized.

In addition, the second fixing portion is provided with a heating portion for evaporating the steam contained in the exhaust gas, thereby solving the problem that the durability due to steam is reduced and the insulating configuration is energized.

The second fixing portion is provided with the second air supplying portion so that the steam contained in the exhaust gas does not flow into the second fixing portion, thereby solving the problem that the durability due to steam is reduced and the insulating configuration is energized.

In addition, the ground plate is capable of preventing a problem of durability deterioration due to frequent sparks due to the dropping of the collected oil mist easily in the gravity direction by sanding the surface on which the oil mist is collected.

Further, the end portion of the ground plate is formed such that the cross-sectional area thereof becomes smaller as a part of the ground plate moves toward the gravity direction, thereby increasing the moving speed of the collected oil mist, thereby preventing the durability of the ground plate from being lowered by steam.

Also, the dust collecting plate can prevent the problem of durability deterioration due to frequent sparks due to the falling of the oil mist, which is collected by dusting the surface on which the oil mist is collected, easily in the gravity direction.

Further, the end portion of the dust collecting plate is formed such that the cross-sectional area thereof becomes smaller as a part of the dust collecting plate moves toward the gravity direction, so that the durability due to steam can be prevented by increasing the moving speed of the collected oil mist.

1 is a view schematically showing a conventional oil mist collecting apparatus.
2 is a view schematically showing another conventional centrifugal type oil mist collecting apparatus.
3 is a perspective view schematically showing an oil mist collecting apparatus according to a first embodiment of the present invention.
Fig. 4 is a view showing an exemplary shape of the lower part of the oil mist collecting device of Fig. 3; Fig.
5 is a view schematically showing a state in which a first heating unit is installed on a first fixing unit of the oil mist collecting apparatus of FIG.
FIG. 6 is a schematic view showing a state in which a first air injection unit is installed in a first fixing unit of the oil mist collecting apparatus of FIG. 3;
Fig. 7 is a view showing a rotating part of the oil mist collecting device of Fig. 3;
8 is a view schematically showing a state in which a blowing fan is installed in a second fixing part of the electric dust collection part of the oil mist collecting device of FIG.
Fig. 9 is a view schematically showing a state in which the second heating part is installed on the second fixing part of the oil mist collecting device of Fig. 3;
FIG. 10 is a view schematically showing a state in which a second air injection unit is installed in a second fixing unit of the oil mist collecting apparatus of FIG. 3;
11 is a schematic exploded perspective view of a lower part and a rotating part of the oil mist collecting apparatus according to the second embodiment of the present invention.
Fig. 12 is a schematic perspective view of the lower part and the rotating part of the oil mist shown in Fig. 11; Fig.
13 is a schematic exploded perspective view of the rotating part and the electric dust collection part of the oil mist shown in Fig.

Prior to the description, components having the same configuration are denoted by the same reference numerals as those in the first embodiment. In other embodiments, configurations different from those of the first embodiment will be described do.

Hereinafter, an oil mist collecting apparatus according to a first embodiment of the present invention will be described in detail with reference to the accompanying drawings. This is for the purpose of illustrating the present invention and is not intended to limit the scope of protection defined by the appended claims.

3 is a schematic perspective view of the oil mist collecting apparatus according to the first embodiment of the present invention. 3, the oil mist collecting apparatus 100 according to the first embodiment of the present invention includes a charging unit 110, a rotation unit 120 installed inside a body part 125 connected to the charging unit 110, An electric dust collection unit 130 connected to the rotation unit 120, a first heating unit 150 installed in the charging unit 110, a first air supply unit 160 installed in the charging unit 110, A blowing fan 170 installed in the electric dust collecting unit 130, a second heating unit 180, and a second air injection unit 190.

FIG. 4 is a view showing an exemplary shape of a lower portion of the oil mist collecting apparatus of FIG. 3, FIG. 5 is a view schematically showing a state in which a first heating portion is installed on a first fixing portion of the oil mist collecting apparatus of FIG. And FIG. 6 is a view schematically showing a state in which the first air injection unit is installed in the first fixing unit of the oil mist collecting apparatus of FIG. The charge unit 110 supplies an electric charge having a polarity of either a positive polarity or a negative polarity to the exhaust gas so that the oil mist has the same polarity as the charge supplied from the charge unit 110, And collects a part of the charged oil mist. 3 to 6, an exhaust gas containing oil mist and water vapor flows into the charge unit 110. The charge unit 110 includes a discharge electrode 111, a first high voltage application unit 112, A ground plate 113, a casing 114 and a first fixing part 115. [

The discharge electrode 111 is configured to charge the oil mist at the same polarity as the charge provided by the discharge electrode 111 by supplying a charge having either one of a positive polarity or a negative polarity to the oil mist to be. A plurality of the discharge electrodes 111 are disposed apart from each other along the flow direction of the exhaust gas, and are disposed between the ground plates 113. That is, a plurality of the discharge electrode 111 and the ground plate 113 are alternately arranged. The discharge electrode 111 is connected to the first high voltage application unit 112 and receives a voltage from the first high voltage application unit 112 to supply electric charge to the oil mist.

The discharge electrode 111 may be provided in various materials or shapes. 4, the discharge electrode 111 is formed as a rigid body, and a protrusion 111a protruding from the side surface of the discharge electrode 111 is formed along the longitudinal direction of the discharge electrode 111. In this embodiment, The discharge electrode 111 is formed by using a rigid body so that a separate structure for applying tension is unnecessary, and thus the plurality of discharge electrodes 111 can be connected in parallel. At this time, unlike the case of using wire, fine metal fiber or carbon fiber, when a rigid body is used, there is a problem that no voltage is generated. However, since the protrusion 111a is formed along the longitudinal direction of the rigid body, a voltage can easily be generated from the protrusion 111a and the oil mist can be charged. Here, the protrusion is not limited to a pin shape, a quadrangle, a shape in which the cross sectional area becomes smaller toward the direction away from the side surface of the discharge electrode, and the like.

In other words, in this embodiment, the discharge unit 110 is formed of a rigid body of the discharge electrode 111, and a plurality of the discharge electrodes 111 are connected in parallel between the ground plates 113. At this time, the oil mist can be easily charged by the protrusion 111a protruding from the side surface of the discharge electrode 111. [ As a result, the number of the discharge electrodes 111 can be increased in the space of the same size to constitute the charging unit 110, so that the oil mist can be charged more easily.

The first high-voltage applying unit 112 is configured to apply a voltage to the discharge electrode 111 so that electric charges can be supplied to the oil mist. The side of the first high voltage application unit 112 is connected to one end of the plurality of discharge electrodes 111. That is, the discharge electrode 111 is connected so as to be disposed in a direction extending from the side surface of the first high-voltage applying unit 112. On the other hand, a high voltage application unit is electrically connected to the first high voltage application unit 112. By applying a voltage to the discharge electrode 111 by the voltage applying unit, the discharge electrode 111 can discharge the charge having polarity to the oil mist.

A plurality of ground plates (113) are arranged so as to be spaced apart from each other to form a spacing space to guide the flow direction of the exhaust gas so that exhaust gas containing oil mist and water vapor flows along the spacing space. Further, the ground plate 113 allows a part of the oil mist charged by the discharge electrode 111 to be collected. The ground plate 113 is electrically grounded so that the electric field formed between the ground plate 113 and the discharge electrode 111 is maximized. The ground plate 113 and the discharge electrode 111 are alternately arranged and an electric field is formed in the direction from the discharge electrode 111 to the ground plate 113 because the ground plate 113 is electrically grounded. As a result, some of the oil mist charged in the discharge electrode 111 is collected in the ground plate 113.

The casing 114 is made of a non-metallic material to accommodate the discharge electrode 111, the first high-voltage application unit 112, and the ground plate 113. [ That is, the casing 114 is provided with an insulator. A through hole is formed in the casing 114 so that both end portions of the first high voltage applying portion 112 can be penetrated.

The first fixing part 115 is provided on the casing 114 as a structure for fixing the first high voltage applying part 112 and is made of a non-metal. That is, the first fixing part 115 is formed of an insulator. The first high voltage application part 112 is provided with both ends passing through the casing 114 and the first fixing part 115 is fixed to both ends of the first high voltage application part 112 passing through the casing 114 do. On the other hand, since water-soluble cooling oil or cutting oil mixed with oil and water is used in recent processing steps, steam is included in the exhaust gas in this embodiment. When steam is continuously present in the space where the first fixing part 115 and the first high voltage applying part 112 are in contact with each other, the first fixing part 115 and the casing 114 and the ground plate 113 connected to the first fixing part 115, There is a problem that the power supply is energized. In addition, there arises a problem that the durability is lowered due to sparks occurring in a space where the first fixing part 115 and the first high-voltage applying part 112 are in contact with each other by water vapor. In order to solve such a problem, a penetrating portion is formed in the first fixing portion 115. In addition, the first heating portion 150, the first air supply portion 160, and the like are provided on the first fixing portion 115, specifically on the side of the penetrating portion.

On the other hand, a pressure difference occurs between the side of the charging part 110 and the side of the electric dust collecting part 130 by the rotation part 120. Specifically, when the rotation unit 120 is rotated, a negative pressure is formed on the charge unit 110 side, and a positive pressure is formed on the electric dust collection unit 130 side. At this time, a through hole is formed in the casing 140, and the fixing part capable of communicating with the outside air is formed in the first fixing part, so that the outside air flows into the oil mist collecting apparatus 100 without a separate device. That is, it is possible to solve the problem that the water vapor contained in the exhaust gas flows due to the natural convection of the outside air, the internal condensation is reduced by the spark, or the ground plate 113 is energized and the electric dust can not be collected.

Fig. 7 is a view showing a rotating part of the oil mist collecting device of Fig. 3; 7, the rotary part 120 applies a centrifugal force to the oil mist charged by the charging part 110 to guide the oil mist to the inner wall of the body part 125 and collides with the oil mist to thereby secondarily oil mist from the inner wall of the body part 125 Collecting. The rotation unit 120 mixes the oil mist generated in the charge unit 110 with the oil mist that is not charged in the charge unit 110, thereby charging the oil mist primarily. The rotating portion 120 includes an inlet portion 121, a sealing portion 122, a blade 123, a motor receiving portion 124, and a body portion 125.

The inflow portion 121 is a region into which exhaust gas including oil mist charged by the charge portion 110 flows. Although the inlet 121 is an annular frame for allowing the exhaust gas to flow in, the inlet 121 may be provided in a different shape.

The sealing portion 122 is configured to allow the oil mist that has passed through the inflow portion 121 to be collected on the inner wall of the body portion 124. The sealing portion 122 is arranged to face the inflow portion 121 and is provided in a circular shape. In other words, unlike the inflow part 121, the sealing part 122 is blocked so that the oil mist can not pass through the inflow part 121, so that the oil mist flows to the inner wall of the body part 125.

In other words, since the centrifugal force generated through the rotary part 120 is a force proportional to the mass of the object, the size of the oil mist is sufficiently small, so that the centrifugal force is not affected by the centrifugal force. (Not shown). Unlike the inflow part 121, the sealing part 122 is hermetically closed so that the flow of the oil mist, which is not affected by the centrifugal force, to the electrical dust collecting part 130 is blocked. The oil mist is collected on the inner wall of the body portion 125 since the outlet through which the oil mist is discharged is only the space between the blades 123 on the side of the rotating portion 120. [ As a result, the oil mist charged in the charge section 110 is collided with the inner wall of the body section 125 to be captured secondarily, and the oil mist mistaken in the charge section 110 is rotated by the rotation section 120, And is charged.

The blade 123 is a member that applies a centrifugal force to the oil mist by rotating. A plurality of blades are provided, interconnecting the inlet portion 121 and the sealing portion 122. Therefore, when the driving force is applied from the motor, the inflow portion 121, the closing portion 122, and the blade 123 are integrally rotated to apply a centrifugal force to the oil mist to collect the oil mist on the inner wall of the body portion 125.

The motor receiving portion 124 is a region where a motor for applying a driving force to the rotating portion 120 is installed. The motor receiving portion 124 allows the motor to be housed in the space between the inlet 121 and the sealing portion 122 so that the motor and the rotary portion 120 are integrally formed. Conventionally, a motor is connected to the front or rear of the rotary part 120 to increase the volume of the entire device, which is inconvenient for a user to carry. Accordingly, in this embodiment, since the motor is accommodated in the rotary part 120, the volume of the device can be reduced to facilitate carrying during the operation, and the oil mist generated at the processing site can be easily removed. Specifically, the size of the entire device is reduced to about 1/4 as compared with a case in which the motor and the rotating part are separately provided or arranged side by side, so that it is easy to carry.

The body portion 125 is configured such that the oil mist that has been subjected to the centrifugal force by the rotation portion 120 is collected and the inlet portion 121, the sealing portion 122, and the blade 123 are accommodated therein. The body portion 125 may be formed integrally with the casing 114.

Fig. 8 is a view showing an electric dust collection section of the oil mist collecting apparatus of Fig. 3; Referring to FIG. 8, the electric dust collector 130 is configured to finally collect the charged oil mist by the charging unit 110. The electric dust collecting part 130 includes a metal plate 131, a dust collecting plate 132, and a second fixing part 134.

The metal plate 131 is connected to the voltage applying unit to form an electric field with the dust collecting plate 132, and a plurality of the metal plates 131 are spaced apart from each other by a predetermined distance. The dust collecting plate 132 is for forming an electric field with the metal plate 131, and a plurality of the dust collecting plates 132 are disposed at intervals between the metal plates 131. That is, the dust collecting plate 132 and the metal plate 131 are arranged alternately and in parallel. At this time, the metal plate 131 is connected to the second high-voltage applying unit and a voltage is applied thereto. However, the dust-collecting plate 132 is made of a nonmetal, is connected to the casing and is electrically insulated from the metal plate 131, An electric field is formed in a direction that is opposite to the direction shown in Fig. The oil mist is charged to have a polarity while being passed through the charging unit 110 and is collected by the dust collecting plate 132 by the electric field formed between the metal plate 131 and the dust collecting plate 132. On the other hand, the second high voltage application unit 133 connects the plurality of metal plates 131 to each other, and has one end connected to a voltage application unit for applying a high voltage. The metal plate 131 forms an electric field with the dust collecting plate 132 by applying a voltage to the metal plate 131 by the voltage applying unit.

The second fixing portion 134 is provided on the casing for fixing the second high voltage applying portion 133 and is made of a non-metallic material. That is, the second fixing portion 134 is formed of an insulator. The second high voltage application unit 133 has both ends penetrating the casing and the second fixing unit 134 fixes both ends of the second high voltage application unit 133 penetrating the casing. As described above, since the exhaust gas includes water vapor in the present embodiment, when steam is continuously present in the space where the second fixing unit 134 and the second high-voltage applying unit 133 are in contact, the dust collecting plate 132 is energized . In addition, there arises a problem that the durability is deteriorated due to the generation of sparks in a space where the second fixing part 134 and the second high voltage applying part 133 are in contact with each other due to water vapor. In order to solve such a problem, a penetrating portion is formed in the second fixing portion 134. The blowing fan 170, the second heating unit 180, and the second air injection unit 190 are provided on the second fixing unit 134, specifically, on the side of the penetrating unit.

The first heating part 150 induces evaporation of water vapor in the first fixing part 115 by applying heat to the first fixing part 115 so that the durability by the steam is lowered and the grounding plate 113 is energized . As described above, the exhaust gas flowing into the first fixing portion 115 of the present embodiment includes water vapor. At this time, water vapor is continuously contacted between the first fixing part 115 and the first high-voltage applying part 112 to generate a spark or the like and the durability thereof is lowered, or the grounding plate 113, which is electrically grounded, A problem arises in that it does not occur. Accordingly, the first heating part 150 is provided near the penetrating part of the first fixing part 115 to induce the evaporation of the water vapor in the casing 114, thereby improving the durability of the apparatus and the oil mist collecting efficiency .

The first heating part 150 may induce evaporation of steam by applying heat to the first fixing part 115 like a general heater. In addition, heat may be generated by applying a voltage to the first fixing part 115 made of an insulating material, in particular, a conductive material disposed around a region where the through part is formed, and then applying a voltage to the conductive material. When a voltage is applied, the magnitude of the voltage is preferably 12V, 24V, or 220V.

Like the first heating unit 150, the first air injection unit 160 is configured to prevent the durability of the apparatus from being lowered by steam. Air is continuously injected into the first fixing part 115 to prevent water vapor from flowing into the first fixing part 115. [ The durability of the apparatus can be improved by preventing the water vapor from continuously contacting between the first high voltage application unit 112 and the first fixing unit 115. The natural air injection is formed due to the pressure difference formed by the rotation unit 120. However, the efficiency of collecting the oil mist can be further improved by the forced air injection by the first air injection unit 160. [

Fig. 8 is a view schematically showing a state in which a blowing fan is installed in a second fixing part of the electric dust collecting part of the oil mist collecting device of Fig. 3, Fig. 9 is a cross- FIG. 10 is a view schematically showing a state in which a second air injection unit is installed in a second fixing unit of the oil mist collecting apparatus of FIG. 3; FIG. The blowing fan 170 is configured to prevent the durability of the dust collecting plate 132 from being reduced due to steam by injecting outside air forcibly into the second fixing portion 134.

The second heating unit 180 induces evaporation of water vapor in the second fixing unit 134 by applying heat to the second fixing unit 134 so as to prevent the durability due to steam from being reduced and the dust collecting plate 132 to be energized . The water vapor in the second fixing portion 134 is evaporated, thereby preventing the steam from being continuously brought into contact with the space between the second fixing portion 134 and the second high voltage applying portion 133. The second heating unit 180 may generate heat by providing a conductive material as the first heating unit 150, and then applying a voltage to the conductive material. When a voltage is applied, the magnitude of the voltage is preferably 12V, 24V, or 220V.

The second air injecting unit 190 injects outside air into the second fixing unit 134 to prevent damage to the apparatus caused by steam and to prevent the dust collecting plate 132 from being energized. Unlike the charging unit 110, the electric dust collecting unit 130 does not perform natural air injection according to a pressure difference caused by the rotation unit 120. [ Therefore, air is forcedly forced into the second fixing part 134 to prevent water vapor from being influenced by the steam. Since the first air injecting unit 160 includes natural convection by the rotation unit 120, the second air injecting unit 190 may apply a force of pressure to inject air as compared with the first air injecting unit 160 A larger one is preferable.

Now, the operation of the oil mist collecting apparatus according to the first embodiment of the present invention will be described.

When the motor is operated by applying a driving force to the motor, the rotation unit 120 rotates. Specifically, when the motor is operated, the hermetic sealing portion 122 rotates, and the blades 123 connected to the hermetic portion 122 and the inlet 121 rotate at the same time. As the rotary part 120 rotates, a negative pressure is formed on the upper side of the rotary part 120, that is, on the lower side 110, and a positive pressure is formed on the lower side of the rotary part 120. [

The oil mist and the water vapor are introduced into the charge unit 110 while being contained in the exhaust gas. The oil mist flowing into the charge section 110 is charged by a charge having a polarity of either the positive or negative polarity emitted from the charge section 110. And moves along the ground plate 113 of the charging unit 110 toward the rotation unit 120 side.

The steam contained in the exhaust gas flows into the first fixing part 115 due to the pressure difference between the first heating part 150 or the air supplying part 160 or the rotating part 120 installed in the first fixing part 115. [ It is possible to prevent the first high voltage applying unit 112 and the first high voltage applying unit 112 from contacting each other continuously. More specifically, steam is evaporated by applying heat to the first fixing part 115 using the first heating part 150, or steam is introduced into the first fixing part 115 through the first air injecting part 160 Thereby preventing the inflow of water vapor into the first fixing part 115 by continuously injecting air. As a result, durability is prevented from being lowered due to generation of sparks due to water vapor contained in the exhaust gas, and the oil mist collecting efficiency is increased.

Then, the oil mist that has passed through the charging unit 110 flows into the rotation unit 120. The oil mist flows along the radial direction with respect to the center axis of the rotary part 120 because the centrifugal force due to the rotation of the rotary part 120 is applied to the oil mist. As a result, the oil mist is trapped on the inner wall of the body portion 125. In addition, the unloaded oil mist and the ions discharged from the charging unit 110 are mixed, whereby the uncharged oil mist is charged in the charging unit 110.

Then, the oil mist collected on the inner wall of the body part 125 moves to the electric dust collecting part 130 side. The oil mist is collected in the dust collecting plate 132 by the electric field formed between the metal plate 131 to which the high voltage is applied and the dust collecting plate 132 which is electrically insulated. At this time, air is continuously injected into the second fixing part 134 through the blowing fan 170 or the second air injecting part 190, or heat is supplied by the second heating part 180, The apparatus is prevented from being damaged and the oil mist collecting efficiency is increased.

Next, an oil mist collecting apparatus according to a second embodiment of the present invention will be described. The second embodiment differs from the first embodiment in that the surfaces of the ground plate and the dust collecting plate are sanded and partly bent, and that the first fixing part and the second fixing part are provided in the form of a chamber.

The oil mist collecting apparatus according to the second embodiment of the present invention includes a charging unit 210, a rotation unit 120 installed in a body part 125 connected to the charging unit 210, A first heating unit 150 installed in the charging unit 110; a first air supply unit 160 installed in the charging unit 110; and a second heating unit 150 installed in the electric dust collection unit 130 A blower fan 170, a second heating unit 180, and a second air injection unit 190.

The first heating unit 150 and the first air supply unit 160, the air blowing fan 170, the second heating unit 180, and the second air injection unit 190, Are the same as those in the first embodiment, and thus redundant description will be omitted.

11 is a schematic exploded perspective view of a lower part and a rotating part of the oil mist collecting apparatus according to the second embodiment of the present invention. Fig. 12 is a schematic perspective view of the lower part and the rotating part of the oil mist shown in Fig. 11; Fig. 11 or 12, the charge unit 210 supplies an electric charge having a polarity of either the positive (+) or negative (-) polarity to the exhaust gas so that the oil mist flows from the charge unit 210 And is charged to have the same polarity as the supplied electric charge, and a part of the charged oil mist is collected. The charging unit 210 includes a discharging electrode 111, a first high voltage applying unit 112, a ground plate 213, a casing 114 and a first fixing unit 115. The detailed description of the same configuration as that of the first embodiment will be omitted.

A plurality of the ground plates 213 are spaced apart from each other to form a spacing space to guide the flow direction of the exhaust gas so that the exhaust gas including the oil mist and water vapor flows along the space. Further, the ground plate 213 allows a part of the oil mist charged by the discharge electrode 111 to be collected. In this embodiment, the surface of the ground plate 213 is sanded. Specifically, the surface of the ground plate 213 on which the oil mist is partially collected is sanded. In this embodiment, the exhaust gas flowing into the charge section 210 includes water vapor. When the surface tension of the ground plate 213 is high, the speed at which the oil mist is collected on the ground plate 213 is faster than the speed at which the oil mist to be collected moves to the end side of the ground plate 213 and is collected and then removed. In this case, there may arise a problem that a spark occurs due to water vapor on the surface of the ground plate 213, in particular, on the end side of the ground plate 213 where the oil mist is collected. Therefore, in this embodiment, the surface of the ground plate 213 on which the oil mist is partially collected is subjected to the sanding treatment to increase the speed of the oil mist falling along the gravity direction.

Further, the ground plate 213 has a smaller cross-sectional area as the end where the oil mist is trapped becomes closer to the gravity direction. The speed of the oil mist moving along the gravity direction is increased due to the shape of the ground plate 213 so that the problems such as generation of sparks due to water vapor on the end side of the ground plate 213 can be prevented.

Therefore, according to the present embodiment, the surface of the ground plate 213 is subjected to the sanding treatment, and the end portion is formed so as to have a smaller cross-sectional area in the gravitational direction, thereby increasing the moving speed or falling speed of the oil mist, .

The first fixing part 215 is provided in the form of a chamber for fixing the first high voltage applying part 112 and is provided on the casing 114 and is made of a non-metal. That is, the first fixing part 215 is formed of an insulator. An apparatus for applying a high voltage to the first high voltage applying unit 112 is installed in the first fixing unit 215 and the first high voltage applying unit 112 is connected to the first fixing unit 215 through the first fixing unit 215. At this time, the penetration portion through which the first high-voltage applying portion 112 is penetrated is provided larger than the diameter of the first high-voltage applying portion 112 so as not to be affected by the steam. Meanwhile, the first fixing part 215 is formed with an injection part for injecting air by the first air injection part 160. That is, air is injected through the injecting part, or steam is not continuously present in the space between the penetrating part and the first high-voltage applying part 112 by heating the side of the penetrating part by the first heating part 150, The problem of durability deterioration and the problem of energization of the ground plate 213 can be solved.

13 is a schematic exploded perspective view of the rotating part and the electric dust collection part of the oil mist shown in Fig. Referring to FIG. 13, the electric dust collecting unit 130 is configured to collect the oil mist charged by the charging unit 110 finally. The electric dust collecting unit 130 includes a metal plate 131 and a dust collecting plate 232. The detailed description of the metal plate 131 which overlaps with the first embodiment will be omitted.

The dust collecting plate 232 is provided to form an electric field with the metal plate 131, and a plurality of the dust collecting plates 232 are disposed at intervals between the metal plates 131. That is, the dust collecting plate 232 and the metal plate 131 are arranged in an alternating manner. At this time, a voltage is applied to the metal plate 131, but the dust collecting plate 232 is electrically insulated, so that an electric field is formed in a direction from the metal plate 131 toward the dust collecting plate 232. The oil mist is charged to have a polarity while being collected by the dust collecting plate 232 by the electric field formed between the metal plate 131 and the dust collecting plate 232.

In this embodiment, the surface of the dust collecting plate 232 is sanded. Specifically, the surface of the dust collecting plate 232 on which the oil mist is collected is sanded. The oil mist collected in the dust collecting plate 232 like the ground plate 213 moves along the dust collecting plate 232 and is collected at the end. This may cause problems such as sparking due to water vapor at the end of the dust collecting plate 232. Therefore, in this embodiment, the surface of the dust collecting plate 232 is subjected to the sanding treatment to increase the moving speed of the collected oil mist, thereby solving the above-mentioned problem.

Further, in the dust collecting plate 232, the cross-sectional area of the end portion where the oil mist is trapped becomes smaller in the gravitational direction. The speed of the oil mist falling along the gravity direction is increased due to the shape of the dust collecting plate 232, thereby preventing the problems such as generation of sparks due to steam at the end of the dust collecting plate 232.

Therefore, according to the present embodiment, the surface of the dust collecting plate 232 is subjected to the sanding treatment and the end portion where the oil mist is trapped is formed to be bent, whereby the moving speed of the oil mist can be increased and the durability of the apparatus can be improved.

The second fixing part 234 is provided in the form of a chamber for fixing the second high voltage applying part, and is provided on the casing and is made of a non-metal. That is, the second fixing portion 234 is formed of an insulator. An apparatus for applying a high voltage to the second high voltage application unit 133 is installed in the second fixing unit 234 and the second high voltage application unit 133 is connected through the second fixing unit 234. [ In this case, the through-hole through which the second high-voltage applying unit 133 is passed is provided larger than the diameter of the second high-voltage applying unit 133 so as not to be affected by the steam. The second fixing part 234 is formed with an injection part 234a so that air can be injected by the second air injection part 190. [ That is, air is injected through the injecting part 234a and the steam is not continuously present in the space between the penetrating part and the second high-voltage applying part 133 by heating the penetrating part side by the second heating part 180 The problem of durability due to water vapor and the problem of energization of the dust collecting plate 232 can be solved.

The scope of the present invention is not limited to the above-described embodiments, but may be embodied in various forms of embodiments within the scope of the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims.

100: Oil mist collecting device 110:
111: discharge electrode 112: first high voltage application unit
113: ground plate 114: casing
115: first fixing part 120:
121: inlet portion 122: sealing portion
123: blade 124: motor accommodating portion
130: electric dust collector 131: metal plate
132: dust collecting plate 133: second high voltage applying unit
134: second fixing part 150: first heating part
160: first air injection unit 170: blowing fan
180: second heating unit 190: second air injection unit
213: ground plate 215: first fixing portion
215a: injection part 232:
234: second fixing portion 234a: injection portion

Claims (16)

A ground plate for introducing an exhaust gas containing oil mist and water vapor into a space to form a spacing space; a discharge electrode provided in the spacing space to generate a high voltage to charge the exhaust gas; A charging unit including a first high voltage application unit for supplying the discharge voltage to the discharge electrode;
The oil mist is collected in the hollow body portion connected to the charge portion, and the oil mist charged in the charge portion is guided and collected in the direction of the inner wall of the body portion. The charged particles are mixed with ions in the charge portion reel;
An electric dust collecting part connected to the rotating part and having an electric field formed to collect the oil mist not removed by the charging part and the rotating part;
A first fixing unit provided in the charging unit and fixed to the first high voltage applying unit;
And a first air supply unit for supplying air into the first fixing unit so that water vapor does not flow into the first fixing unit. The method according to claim 1,
The rotation unit includes:
An inflow portion through which the oil mist flows; A sealing part facing the inflow part and provided in a plate shape to block the flow of the oil mist toward the electric dust collection part; And a plurality of blades connected to the inlet and the hermetically sealed portion to generate a centrifugal force through rotation. 3. The method of claim 2,
Wherein the rotating portion further includes a motor receiving portion for receiving a motor in a space between the inlet portion and the sealing portion. The method according to claim 1,
Wherein the electric dust collecting unit comprises:
A plurality of dust collecting plates disposed spaced apart from each other by a predetermined distance and electrically insulated from each other; And a metal plate arranged alternately with the dust collecting plate and forming an electric field with the dust collecting plate when a voltage is applied thereto. 5. The method of claim 4,
A second high voltage application unit for applying a voltage to the metal plate; Further comprising: a second fixing part, provided on the electric dust collecting part, for fixing the second high voltage applying part. 6. The method of claim 5,
Further comprising a second air supply unit for supplying air into the second fixing unit so that steam does not flow into the second fixing unit. 6. The method of claim 5,
And a second heating unit for inducing evaporation of water vapor in the second fixing unit. The method according to claim 1,
Further comprising a first heating unit for inducing evaporation of water vapor in the first fixing unit. 9. The method according to any one of claims 1 to 8,
And a plurality of protrusions protruding from a side surface of the discharge electrode, wherein the plurality of protrusions are formed along the longitudinal direction of the discharge electrode. 10. The method of claim 9,
Wherein the surface of the ground plate on which the oil mist is collected is sanded. 11. The method of claim 10,
Wherein an end portion of the ground plate on which the oil mist is collected has a smaller cross-sectional area in the gravitational direction. 5. The method of claim 4,
Wherein the surface of the dust collecting plate on which the oil mist is collected is sanded. 13. The method of claim 12,
Wherein an end portion of the dust collecting plate on which the oil mist is collected has a smaller cross sectional area in the gravitational direction. delete delete delete

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